Object of the invention is a door locking foldable safety trim which increases the strength of the door, it ensures a more efficient way to increase safety. The invention has an adjustable button for locking the trim into the desired angle ensuring the proper fitment to secure. With the release button to close and retract back to the closed position completely flushed, thus giving it a natural trim appearance around the door.

When an emergency situation such as a fire occurs, a rescuee trapped in a room is embarrassed or loses judgment, and thereby a situation of forgetting how to release the locking device, repeating an erroneous operation, or the like occurs. Therefore, when a situation such as a fire occurs, a front door, which is a most effective evacuation path, cannot be used, and thereby in most cases of fire, deaths in front of the door are frequently reported. The present invention is made to improve the above-described problems, and relates to a fire safety door lock of which a lock state is automatically released by automatically operating, as illustrated in the drawing below, a spring composed of a shape memory alloy connected to a locking bar of the digital door lock when being operated, and which is capable of being opened independently without being affected by other circuits.

An exit device located in a door frame having a door strike including a latchbolt assembly, a pushbar assembly, and a link assembly. The latchbolt assembly includes an extended position configured to engage the door strike, and a retracted position configured to move past the door strike. The pushbar assembly moves from a released position to a pressed position to move the latchbolt assembly from the extended position to the retracted position. The link assembly is operatively connected to the pushbar assembly and includes a security link having an elongated aperture and a pin configured to extend through the elongated aperture about which the security link rotates. A keeper surrounds the pin and supports the security link for rotation. In the event of extreme heat, the keeper melts and the security link moves to a position to substantially prevent opening of the door.

An auto-latching latch assembly is mounted to a follower door of a double door. The latch assembly includes a latch movable between an unlatching position and a latching position and a movable member jointly movable with the latch. A positioning member is jointly pivotable with the movable member. When the latch moves to the unlatching position, the positioning member positions the latch in the unlatching position. When the follower door is closed while a primary door of the double door is closed, an actuation latch presses against and releases the positioning member to move the latch to the latching position, reliably locking the follower door.

A fire door operator for a rolling door includes a housing defining an axis. An outer main gear in the form of an annular ring is mounted within the housing for rotation about the axis and formed with exterior gear teeth and radially inwardly spaced interior teeth. Planet gears are meshed with the interior teeth and a sun gear is meshed with the planet gears for rotation about the axis. A carrier is secured to the planetary gears and coupled to the shaft. A lock normally locks the main gear in relation to the housing. A drive selectively rotates the sun gear and the carrier to transmit rotational power to a rolling door shaft when secured to the carrier. A releasing device selectively releases the lock to allow free rotation of the main gear and the carrier to allow a rolling door to be lowered under its own weight.

A power transfer device for a fire door operator having a pair of drive gears includes a bridge gear box having a drive shaft suitable for being coupled to an external drive. An idle spur gear is fixed to the drive shaft. A pair of spur gears are coupled to the idle spur gear to rotate in response to rotations of the idle spur gear. Spur gear shafts are coupled to the spur gears and arranged to be coupled to the drive gears of the operator so that rotation of the drive shaft by an external drive is translated to simultaneous rotations of the drive gears of the operator.

An emergency escape system is provided. The system comprises a quick release safety pin, a manual release box configured with a metal jacket that contains the pin, and a swing arm attached via a rod to a locking mechanism, the swing arm held immobile by the pin. Upon release of the pin, the arm is configured to move in a horizontal direction and cause the rod to pull and release the locking mechanism from an engaged position. The locking mechanism, when in engaged position, securely maintains at least one of a window, a door, and a panel. The safety pin, the metal jacket, and the swing arm are positioned on an outward facing surface of the manual release box. A load spring surrounding the rod is manipulated by action of the swing arm and causes release of the locking mechanism.

A latch mechanism is disclosed. The latch mechanism has a first member, and a second member that is rotatable relative to the first member, the second member being rotatable in a first direction between a first position and a second position. The second member contacts the first member and is received by the first member when the second member is in the second position. The first member includes a shape memory alloy portion. The shape memory alloy portion is movable between a first shape when in a first state and a second shape when in a second state. The shape memory alloy portion moves from the first shape to the second shape based on a temperature of the shape memory alloy portion exceeding a threshold transition temperature of the shape memory alloy portion.

An exit device located in a door frame having a door strike including a latchbolt assembly, a pushbar assembly, and a link assembly. The latchbolt assembly includes an extended position configured to engage the door strike, and a retracted position configured to move past the door strike. The pushbar assembly moves from a released position to a pressed position to move the latchbolt assembly from the extended position to the retracted position. The link assembly is operatively connected to the pushbar assembly and includes a security link having an elongated aperture and a pin configured to extend through the elongated aperture about which the security link rotates. A keeper surrounds the pin and supports the security link for rotation. In the event of extreme heat, the keeper melts and the security link moves to a position to substantially prevent opening of the door.

A safety cabinet includes an enclosure and at least one door to selectively seal the enclosure. The safety cabinet can be used to store, for example, flammable liquids, flammable waste, corrosives, pesticides, or combustible waste. The safety cabinet incorporates a thermally-actuated damper that includes a body, a valve plate, and a pivot assembly. The valve plate is disposed within the passage of the body such that the valve plate is movable between an open position and a closed position. The pivot assembly includes a biasing system adapted to bias the valve plate to the closed position and a fusible link interconnected between the body and the biasing system to constrain the valve plate from moving from the open position to the closed position. The fusible link is configured to melt at a predetermined temperature to thereby allow the biasing system to move the valve plate to the closed position.